Pressure Sensitive Adhesives (PSA) continue to expand their applications in packaging, converting, assembly, bookbinding, nonwovens, foot wear, automotive and many other markets. Infrared (IR) and Near Infrared (NIR) transmitters offer economical tools to improve Quality Control and Assurance while increasing Production Opportunity with improved Process Control.
Near Infrared Transmitters can measure wet end water based coatings, dry end organic depositions, pre-treatments and hot melt adhesive thickness. Roll, Doctor Blades, Air Knifes, Die Bolts and other coaters benefit from these measurements. These NIR transmitters can also measure moisture at the dryer exit and after re-moisturizing unit operations to reduce lay flat and edge curl. Mounting these transmitters on a scanning frame equipped with a position encoder, the web profile can be mapped on a PC to assist in maintaining a uniform profile across the web.
Infrared Pyrometers and Thermal Imaging Systems allow for temperature measurements to be incorporated into the control scheme and detection of hot spots in the manufacturing process. Pyrometers can be mounted at the exit of the dryer or internally for specific zone measurement. Thermal Imagers can identify cold and hot spots across the product to identify problems in unit operations that can then be corrected. Together NIR and IR tools greatly assist the development of consistent and uniform manufacturing while reducing the cost of manufacturing in-specification product.